-72=3(1-5n)-6(2-n)

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Solution for -72=3(1-5n)-6(2-n) equation:


Simplifying
-72 = 3(1 + -5n) + -6(2 + -1n)
-72 = (1 * 3 + -5n * 3) + -6(2 + -1n)
-72 = (3 + -15n) + -6(2 + -1n)
-72 = 3 + -15n + (2 * -6 + -1n * -6)
-72 = 3 + -15n + (-12 + 6n)

Reorder the terms:
-72 = 3 + -12 + -15n + 6n

Combine like terms: 3 + -12 = -9
-72 = -9 + -15n + 6n

Combine like terms: -15n + 6n = -9n
-72 = -9 + -9n

Solving
-72 = -9 + -9n

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Add '9n' to each side of the equation.
-72 + 9n = -9 + -9n + 9n

Combine like terms: -9n + 9n = 0
-72 + 9n = -9 + 0
-72 + 9n = -9

Add '72' to each side of the equation.
-72 + 72 + 9n = -9 + 72

Combine like terms: -72 + 72 = 0
0 + 9n = -9 + 72
9n = -9 + 72

Combine like terms: -9 + 72 = 63
9n = 63

Divide each side by '9'.
n = 7

Simplifying
n = 7

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